From 2df418cf4b720fe3a0db4b4aab67be43d26af9dd Mon Sep 17 00:00:00 2001
From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Date: Fri, 31 Mar 2023 11:33:14 +0200
Subject: [PATCH] driver core: class: remove subsystem private pointer from
struct class
Now that the last users of the subsystem private pointer in struct class
are gone, the pointer can be removed, as no one is using it. One step
closer to allowing struct class to be const and moved into read-only
memory.
Acked-by: Rafael J. Wysocki <rafael@kernel.org>
Link: https://lore.kernel.org/r/20230331093318.82288-3-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/base/class.c | 4 ----
include/linux/device/class.h | 2 --
2 files changed, 6 deletions(-)
diff --git a/drivers/base/class.c b/drivers/base/class.c
index a8a1bf9762908..fcfb295363cc2 100644
--- a/drivers/base/class.c
+++ b/drivers/base/class.c
@@ -97,8 +97,6 @@ static void class_release(struct kobject *kobj)
pr_debug("class '%s': release.\n", class->name);
- class->p = NULL;
-
if (class->class_release)
class->class_release(class);
else
@@ -206,7 +204,6 @@ int class_register(struct class *cls)
cp->subsys.kobj.kset = class_kset;
cp->subsys.kobj.ktype = &class_ktype;
cp->class = cls;
- cls->p = cp;
error = kset_register(&cp->subsys);
if (error)
@@ -222,7 +219,6 @@ int class_register(struct class *cls)
err_out:
kfree(cp);
- cls->p = NULL;
return error;
}
EXPORT_SYMBOL_GPL(class_register);
diff --git a/include/linux/device/class.h b/include/linux/device/class.h
index 9cb5db0588c8e..f7aad64e256ad 100644
--- a/include/linux/device/class.h
+++ b/include/linux/device/class.h
@@ -71,8 +71,6 @@ struct class {
void (*get_ownership)(const struct device *dev, kuid_t *uid, kgid_t *gid);
const struct dev_pm_ops *pm;
-
- struct subsys_private *p;
};
struct class_dev_iter {
--
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